Portion on a display screen with transitional user interface



FIG. 1 is a front view of the first image in the sequence for a portion of a display screen with transitional user interface showing the new design.

FIG. 2 is a front view of the second image thereof.

FIG. 3 is a front view of the third image thereof.

FIG. 4 is a front view of the fourth image thereof.

FIG. 5 is a front view of the fifth image thereof; and,

FIG. 6 is a front view of the sixth image thereof.

The appearance of the transitional graphic image sequentially transitions between FIGS. 1-6. The process or period in which an image changes into another image forms no part of the claimed design.

The broken line showings of the display screen, pictures, patterns, characters, and symbols are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a portion of a display screen with transitional user interface, as shown and described herein. 